Water heater



June 11, 1929. v 5. SMITH- 1,716,508

WATER HEATER Filed June 8, 19 25 I Inventor.

Patented June ll, 1929.

GRANT SMITH, OF TORONTO, ONTARIO, CANADA.

WATER HEATER.

Application filed Sims 8,

The principal objects of the invent-ion are, to obtain the maximum efliciency in the ab sorption of heat from a gas burner by the water to be heated, and to devisea coil structure through which the water is circulated which will concentrate the applied heat.

The principal feature of the invention consists in the novel Construction of the heater coil, whereby the flame and heating gases are intercepted and directed around the heater coil containing the water by the flanges spaced from and supported by radial webs extending from the coil.

In the drawings, Figure 1 is a perspective view of one of my improved heater coil units.

Figure 2 is a vertical section through the line 22 of Figure 1.

Figure 3 is a small elevational view of the improved heater. i

The present form of: water heater consists of a tubular coil 1, preferably circular in form having a plurality of tubular radial arms 2 connected with a central hollow boss 3. This boss is provided with a centrally arranged threaded opening a in the upper side and the bottom of the coil where it is used at the lower end of the series or singly, is provided with a conical end 5 on the underside.

A multiple boss 6 is formed on the perimeter of the coil 1 and provides a plurality of openings to the interior of the coil.

This may be used in any manner desired by connecting pipes to certain of the openings and blocking the others.

\Vhen the coil is to be used as a single coil in a furnace, the threaded opening 4 in the boss 3 will be plugged and the feed and return pipes will be connected to the outer of the openings in the multiple boss 6 and the water will be circulated around the coil, or it the arrangement of the furnace permits, it may be desired to carry the feed pipe to one of the openings in the boss 3 and take the outflow from the centre.

Where the heater is used in a multiple arrangement, as illustrated in Figure 8, the central boss is provided with threaded oriflees, top and bottom. The feed pipe is connected to one of the openings in the multiple boss 6 in the bottom coil and the water circulates around the coil and up through the central boss to the next coil and spreading through the soil, heat 1325. Serial No. 35,671.

to the coil causes the hottest water to circu late out of: the central passage and so on,

the heating continues through the members of the multiple unit.

As previously stated the principal feature of the coil consists in the arrangement of the flanges 7 and 8. These are thin webs of metal cast integral with the coil, being con nected thereto by the radial webs 9 which hold the said flanges in position so that the flames and gases of combustlon i'rom the burner flowing upward are intercepted and.

directed toward and around the coil 1 on both sides.

I The outer flanges 7 are formed with an. inwardly slanting curve and they are formed in sections spaced apart in order to allow tree expansion and contractlon.

The inner flanges 8 are provided with a will occur.

The invention may be utilized for various kinds of service and being made of cast metal may be produced at the minimum cost.

What I claim as my invention is 1. A water heater comprising a coil having a series of segmental integrally cast flanges extending from the bottom portions of the coil and spaced therefrom, said flanges curving inwardly from their bottom edges toward the peripheries of the coil and directing the heating gases thereagainst.

2. A water heater comprising a coil presenting a plurality of radially spaced peripheral surfaces, a plurality of radial webs integral with said coil and extending outwardly from said peripheral surfaces, and a plurality of radially and circumterentially spaced segmental flanges cast integral with said webs and spaced from the peripheries of said coil, the upper portions of said flanges terminating substantially intermediate of the depth of said peripheral surfaces and being curved inwardly toward the same to eflectithe directing of hot gases from below the coil. inwardly against said peripheral. surfaces. I

3. A "water heater, comprising a coil formed with a central hollow boss having a hollow ring member spaced from and encircling said boss, a plurality of hollow r'adial arm's connecting the hollow interiors of said boss and encircling ring, a plurality of circumferentially spaced segmental flanges arranged in the space between said ring and central boss and having their side Walls curved toward the adjacent opposing walls of the boss and ring to direct hot gases thereagainst, and a flange spaced from the outer wall of said ring having its wall curved inwardly to direct hot gases thereagainst.

GRANT SMITH. 

